Product Details
Miniature Infrared Methane Sensor KGD-SJH-210
Product Introduction
The Miniature Infrared Methane Sensor KGD-SJH-210 is an
industrial-grade gas sensor used for real-time measurement of
changes in gas concentration. It adopts the Non-Dispersive Infrared
(NDIR) detection technology. Compared with the thermal catalytic
and semiconductor principles, it has remarkable features and
advantages such as a good signal-to-noise ratio, strong
selectivity, immunity to cross-gas interference, high precision,
excellent long-term stability, and a long service life. The sensor
is compatible with both analog voltage and digital serial port
outputs, meeting various usage requirements in industrial sites,
laboratory measurements, etc., and is widely applied in fields such
as coal mines, fire protection, urban utility tunnels, underground
chambers, and pressure regulating cabinets.
Product Features
- Wide operating temperature range from -40℃ to 70℃
- Multiple measurement ranges are optional, full-range linearization,
and digital output
- Ensures detection accuracy across the entire temperature and
concentration range
- Abnormal alarm outputs such as high humidity alarms
- Resistance to interference from acetic acid and ethanol gases
- Self-calibration is optional
- Dustproof and waterproof with an IP64 rating
- Fast response and good stability
- Meets the explosion-proof rating of Ex ia IIC T4 Ga, and the
explosion-proof certificate number is CITCEx21.0902U
Technical Parameters
Measurement Range | 0-5%Vol,0-100% Vol |
Accuracy | 0-1%: ≤±0.06%Vol 1%-100%:≤±6% of reading |
Resolution | 0.01% |
Warm-up Time | 10s |
Response Time | <25s |
Operating Temperature | -40-70℃ |
Storage Temperature | -40-85℃ |
Operating Humidity | 0 to 95% Relative Humidity (RH), non-condensing |
Operating Voltage | 3.3 Volts to 5.5 Volts |
Average Operating Current | 55 to 60 milliamps (powered by 5 Volts) |
Operating Pulse Current | 360 to 400 milliamps (powered by 5 Volts) |
Output Mode | UART-TTL (2.5 to 3.3 Volts) / DA output (0.4 to 2 Volts) |
Dimensions | Φ2019/Φ2016.6 (millimeters) (excluding pins) |
Shell Material | Stainless steel |
Weight | Less than 20 grams |
Service Life | ≥ 10 years |
Explosion-proof Rating | Ex ia IIC T4 Ga, and the explosion-proof certificate number is
CITCEx21.0902U |
Company Profile
Xi'an Kacise Optronics Co.,Ltd. is a professional manufacturer of
measuring instruments , located in China xi’an City. Since 2008,
Xi'an Kacise focused on the development and production of pressure,
level and flow measuring instruments .

We have been specializing in manufacturing pressure, level and flow measuring instruments and related products for 10 years. Based on experienced technical
and management personnel, through efforts of our entire staff, we
have become a professional measuring instrument manufacturer and
solution provider. And we are continuously trying to improve
product quality.

Xi'an Kacise is qualified with ISO 9001-2008, GJB 9001B-2009, CE,
intrinsic safety explosion-proof and isolated safety
explosion-proof certificates, etc. which ensure that our products
comply with international standards.

Kacise sensors have already been exported to America, Spain,
Australia, Chile and 20 other countries and regions, and received
many favorable feedbacks. Our overseas distributers are also
increasing. We regard “reasonable prices, efficient production time
and good after-sales service” as our tenet, and hope to cooperate
with more customers for mutual development.

Our goal is simple: to sell the best products at the best prices,
and provides industry-leading customer service. We personally get
to know each of our customers, and we know how to discover the most
valuable part of our business , to help others achieve their goals.